Turk ortodonti dergisi : Ortodonti Derneg'nin resmi yayin organidir = Turkish journal of orthodontics最新文献

The cleft lip and palate cases are the most frequently seen congenital deformities. Retardation of the maxillary development and collapse are the most significant characteristics in these cases. It is aimed to correct the functions like mastication, deglutition and speech which were disturbed due to anatomic deficiency and to obtain an acceptable occlusion and esthetics, by means of the therapy. As much as the preoperative orthopedic procedures applied just after the birth, the orthopedic and orthodontic appliances used in mixed and permanent dentition periods affect the prognosis in these cases. The purpose of the treatment in permanent dentition is to correct the malocclusion and to prepare the dentition to prosthetic restorations. In this article the orthodontic treatment of a case in permanent dentition, with cleft palate and lip characterized with severe maxillary collapse will be presented.

In this study 10 Angle class 11/1 cases who did not complete their maximal pubertal development, with retrognathic mandible and deep bite were treated with the Herbst appliance. Together with significant dental, skeletal and soft tissue changes, Angle class 1 occlusion was achieved. Normal function and esthetic appearance were established. Lateral radiographies of pre-treatment, post-treatment and retention periods were evaluated. Skeletal and dental factors contributing to the establishment of class 1 occlusion were determined.

In this study, effects of chin-cap therapy on profile facial esthetics were investigated. 30 patients indicating skeletal and dental Cl III anomalies were divided into two groups. The first group, including 21 patients with the average age of 11 was treated by chin-cap therapy, average treatment time being 0.7 years. This group involved 10 females and 11 males. The second group involved 9 persons, 5 females and 4 males, with the average age of 9.7, average control period being 2 years. The investigation was carried out on the 60 lateral cephalometric films taken from both groups. 2 angular and 9 soft tissue cephalometric measurements were made on each film. The comparisons between the groups indicated that the treatment affected the soft tissue measurements positively.

The purpose of the study was to investigate the effects of lower canine distalization with .016 x 0.016 inch sectional arches on the positions of lower incisors and first permanent molars. Study was carried out on two lateral cephalograms taken at the beginning of treatment and at the end of canine distalization over a period of six months, from each of 17 subjects having a chronological age range of 11 years 8 months and 19 years and whose treatments with first premolar extraction were begun with .018 inch slot std. edgewise technique. Due to the mean lower canine distalization of 3 mm. till spacing of lower anteriors, mean lower incisor retrusion of 0.9 mm. concurrent with a mean decrease of 0.9 mm. in Holdaway difference were occurred which were both found to be statistically significant. Mesial movement of lower first permanent molars having a mean of 0.3 mm was not found to be significant.

This study was done to find out the standard norms and their relations in the mandibular dimensions and angles in cephalometric x-rays of total 85 adults-48 males and 37 females-aged 18-20 with normal occlusion. The dimensions of ramus and corpus with the lengths Co-Go and Go-M lines and effective mandibular lengths with Co-Pg and also the Co, Go and M angles were measured by cephalometric rules. The mean values, standard deviations and the correlation coefficient of these measurements were evaluated statistically and the values related to mandibular with normal occlusion in both sexes were shown. Ramus-total relations in males and corpus-total relations in females and relations of all mandibular angles in both sexes were found significant in the individuals with normal dental occlusion and skeletal pattern.

The lower incisor positions have an important role in obtaining optimum occlusion and esthetics with orthodontic therapy. The aim of this study is to evaluate in longterm, the lower incisor positions of class I anterior crowding cases which were treated with Begg and Edge wise techniques. For this purpose lateral cephalometric radiographs of 20 Edge wise and 11 Begg cases which were treated by extraction of the four first bicuspids are evaluated. In all the cases T to NB (mm) T to NB (angle) and IMPA parameters examined before treatment, just after active therapy and in an average of 5 years postretention period. In cases which were treated with Begg mechanics, statistically important improvement is found in IMPA values after treatment. Lower incisors were stable in postretention period and there were no statistically significant differences when we compared the "after treatment" and "postretention" incisor positions in both treatment groups.

Anterior cross-bites which involve one tooth or a group of teeth is commonly seen in every age groups. Removable or fixed appliances are used in the treatment of these cases. Both of these appliances have some advantages and disadvantages. The objective of this study is to evaluate the effectiveness of the Modular 3 D Adapter in the treatment of the anterior cross-bites. All of the 14 patients aged between 10 years 1 month and 24 years 2 months showed Angle Class I anterior Cross-bite malocclusion. Only the first molar tooth or teeth were banded, then 0.025 inch Adapter appliance was used Lingually. By applying a force between 60-70 grams, the normal occlusions were gained after 2 months.

Recently the effect of the head posture on craniofacial and dentoalveolar morphology had been an interesting research topic. Head posture was defined as the craniovertical angle formed between the head in self-balanced position and the true vertical. A foreward bending deviation of the head was termed flexion, and a backward bending deviation of the head was termed extension. In this study, total of 60 subjects with Angle class 1, class II/1 and class III malocclusion, who did not have orthodontic treatment previously and who did not have any sight or nose breathing problems, without vertical discrepancies like openbite or extreme deep bite had been chosen. Craniovertical angle which determined the posture of the head had been measured directly from the individuals. We found a statistically significant relationship between the head posture, class II/1 and class III malocclusions.

In this study which is done to examine the effect of teeth positions on soft tissue profile (45 males-age 20-and 20 females age average 18.2 +/- 0.58) total 65 adults with normal orthodontic region, what the position and thickness of soft tissues should be is shown when the teeth are in normal occlusion. In this research which puts for the certain dentofacial criteria, dental system with soft tissue positions and thickness in both sexes is important. When lower and upper-lips are tangents to or just behind Steiner's "S plane" the balanced facial profile in our population is found and considered to be ideal statistically. In spite of this the criteria used esthetic balances changes from one person to another.

The Frankel II appliance which is used in Angle Class II Division 2 cases, establish sagittal, vertical and transversal development of the jaws by keeping away the perioral muscles as in the other functional regulators. The difference between FR II and FR I appliances is the design of canine wires. After 8 months of FR II treatment of the 11 year old Class II Div. 2 patient with 5 mm. overbite, as the overbite decreased by 3 mm., the FMA angle increased and a transversal and sagittal development was established in both upper and lower jaws.